To set up the display order of the payment methods, go to the Administration panel\Settings\Payment method\Sorting order field.
On the tablet payment methods are sorted in increasing order depending on the value of the Sorting order field in the Sales screen.
It means that if you enter 1 for the “Cash” payment method and 2 for the “Cred.card” payment method, in the Sales screen the payment methods will be displayed in the following order: Cash, Cred.card.
However in the mobile application settings if the checkbox “Set the default payment type” is checked but you have not chosen any payment method yet, then the payment method with the lowest value of the Sorting order field, in our case it’s “Cash”, will be substituted in the dialogue box of payment confirmation (it is displayed after you click on the Pay button).
Moreover, if the checkbox “Set the default payment type” is not checked in the mobile application settings and you have not chosen any payment method yet, the application will not allow you executing payment by displaying the corresponding error message: “Error. Please select a payment type”.
Selecting a payment method is mandatory as it allows avoiding operator’s random errors.